BTU1500-NP “All-In-One” Combustion Gas Analyzer

All In One Flue Gas Combustion Analyzer for HVAC Residential & Commercial Boiler & Furnace Installation & Maintenance.
Combustion Analyzer for O2, CO, CO2 (Calculates Combustion Efficiency, Excess Air, Losses, CO Air Free), Ambient Room Air Carbon Monoxide (CO) Leak Detector, Draft Meter (Negative & Positive Draft), Cracked Heat Exchanger Test Included, Built–In Differential Digital Pressure Manometer
Built–in Differential Thermometer.